/* Risk-Based Guardrail Calculator Styles */

:root {
    --primary-color: #60a5fa;
    --success-color: #4ade80;
    --warning-color: #fbbf24;
    --danger-color: #f87171;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    /* Semantic Variables (Dark Theme Default) */
    --bg-body: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    --bg-header: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    --bg-container: #1f2937;
    --bg-card: #1f2937;
    --bg-panel: #374151;
    --bg-input: #374151;
    
    --text-main: #f3f4f6;
    --text-heading: #f9fafb;
    --text-secondary: #d1d5db;
    --text-label: #e5e7eb;
    
    --border-color: #4b5563;
    --input-border: #6b7280;
    
    --shadow-color: rgba(0, 0, 0, 0.5);
    
    --box-info-bg: rgba(37, 99, 235, 0.2);
    --box-error-bg: rgba(220, 38, 38, 0.2);
    --text-error: #fca5a5;
    --text-on-accent: #0f172a;
    --pos-color: #93c5fd;
}

@media (prefers-color-scheme: light) {
    :root {
        --bg-body: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        --bg-header: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        --bg-container: #ffffff;
        --bg-card: #ffffff;
        --bg-panel: #f9fafb;
        --bg-input: #ffffff;
        
        --text-main: #1f2937;
        --text-heading: #111827;
        --text-secondary: #4b5563;
        --text-label: #374151;
        
        --border-color: #e5e7eb;
        --input-border: #d1d5db;
        
        --shadow-color: rgba(0, 0, 0, 0.3);
        
        --box-info-bg: #eff6ff;
        --box-error-bg: #fee2e2;
        --text-error: #991b1b;
        --text-on-accent: #ffffff;
        
        --primary-color: #2563eb;
        --success-color: #16a34a;
        --warning-color: #f59e0b;
        --danger-color: #dc2626;

        --pos-color: #2563eb;
    }
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-main);
    background: var(--bg-body);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 80vw;
    margin: 0 auto;
    background: var(--bg-container);
    border-radius: 12px;
    box-shadow: 0 20px 60px var(--shadow-color);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: calc(100vh - 40px);
}

/* Header */
.header {
    background: var(--bg-header);
    color: white;
    padding: 40px;
    text-align: center;
    flex-shrink: 0;
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 10px;
}

.description {
    font-size: 0.95rem;
    opacity: 0.85;
}

.description a {
    color: white;
    text-decoration: underline;
}

/* Main Content */
.main-content {
    flex: 1;
    overflow: hidden;
    padding: 0;
    min-height: 0;
}

/* Two-Column Layout */
.two-column-layout {
    display: flex;
    height: 100%;
}

.column-left {
    width: 35%;
    min-width: 35%;
    position: relative;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    border-right: 1px solid var(--border-color);
    transition: width 0.3s ease, min-width 0.3s ease;
}

.column-left.collapsed {
    width: 56px;
    min-width: 56px;
}

.column-left-content {
    flex: 1;
    overflow-y: auto;
    padding: 30px;
    min-height: 0;
}

.column-left.collapsed .input-body {
    display: none;
}

.column-right {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.column-right-content {
    flex: 1;
    overflow-y: auto;
    padding: 30px;
    min-height: 0;
}

/* Collapse Toggle Button */
.collapse-toggle {
    width: 36px;
    height: 36px;
    min-width: 36px;
    min-height: 36px;
    aspect-ratio: 1 / 1;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    transition: all 0.2s;
    box-shadow: 0 2px 6px var(--shadow-color);
    padding: 0;
    line-height: 1;
    flex-shrink: 0;
}

.collapse-toggle:hover {
    background: var(--primary-color);
    color: var(--text-on-accent);
    border-color: var(--primary-color);
}


.column-left.collapsed .collapse-icon {
    transform: rotate(180deg);
}

.collapse-icon {
    display: inline-block;
    transition: transform 0.3s ease;
}

/* Left column card adjustments */
.column-left-content .calculator-card {
    margin-bottom: 0;
    border: none;
    background: transparent;
    padding: 0;
}

.column-left-content .input-header {
    position: sticky;
    top: -30px;
    background: var(--bg-container);
    padding: 10px 0 15px;
    margin: -10px 0 20px;
    z-index: 5;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.column-left.collapsed .input-header {
    justify-content: center;
    padding: 10px 0 10px;
}

.column-left.collapsed .input-header h2 {
    display: none;
}

.column-left-content .input-header h2 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--text-heading);
}

/* Right column form-actions at top */
.column-right-content .form-actions {
    position: sticky;
    top: -30px;
    background: var(--bg-container);
    padding: 10px 0 20px;
    margin: -10px 0 0;
    z-index: 5;
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: 8px;
    padding: 30px;
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
}

.card h2 {
    color: var(--text-heading);
    margin-bottom: 20px;
    font-size: 1.5rem;
}

/* Form Styles */
fieldset {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 20px;
    margin-bottom: 20px;
}

legend {
    font-weight: 600;
    color: var(--text-label);
    padding: 0 10px;
    font-size: 1.1rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 15px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-label);
    font-size: 0.9rem;
}

.form-group input,
.form-group select {
    padding: 10px 12px;
    border: 1px solid var(--input-border);
    border-radius: 6px;
    font-size: 1rem;
    transition: all 0.2s;
    background-color: var(--bg-input);
    color: var(--text-main);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group small {
    margin-top: 5px;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Asset Allocation Display */
.allocation-display {
    margin-bottom: 15px;
}

.allocation-bar {
    height: 40px;
    display: flex;
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 10px;
    border: 1px solid var(--input-border);
}

.allocation-total {
    text-align: center;
    font-weight: 600;
    color: var(--text-label);
}

/* Income Sources */
.income-source,
.expense-item {
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 15px;
    margin-bottom: 15px;
    position: relative;
}

.income-source-header,
.expense-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.remove-income,
.remove-expense {
    background: var(--danger-color);
    color: var(--text-on-accent);
    border: none;
    padding: 5px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-block;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--text-on-accent);
    width: 100%;
}

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
    background: var(--border-color);
    color: var(--text-main);
}

.btn-secondary:hover {
    background: var(--input-border);
}

.form-actions {
    margin-top: 30px;
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.form-actions .btn {
    flex: 1;
    min-width: 200px;
}

/* Loading Indicator */
.loading-indicator {
    text-align: center;
    padding: 40px;
}

.spinner {
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Results Section */
.results-card {
    border: 2px solid var(--primary-color);
}

.results-summary {
    margin-bottom: 30px;
}

.result-primary {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
    padding: 30px;
    background: var(--bg-panel);
    border-radius: 8px;
}

.pos-gauge {
    text-align: center;
}

.pos-value {
    font-size: 4rem;
    font-weight: 700;
    color: var(--pos-color);
    line-height: 1;
}

.pos-label {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-top: 10px;
}

.guardrail-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
}

.status-badge {
    padding: 20px 30px;
    border-radius: 8px;
    font-size: 1.2rem;
    font-weight: 600;
    text-align: center;
}

.status-above {
    background: var(--primary-color);
    color: var(--text-on-accent);
}

.status-within {
    background: var(--success-color);
    color: var(--text-on-accent);
}

.status-below {
    background: var(--danger-color);
    color: var(--text-on-accent);
}

.result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.result-item {
    background: var(--bg-card);
    padding: 20px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.result-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.result-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-heading);
}

/* Interpretation Box */
.interpretation-box {
    background: var(--box-info-bg);
    border-left: 4px solid var(--primary-color);
    padding: 20px;
    border-radius: 6px;
    margin: 30px 0;
}

.interpretation-box h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.interpretation-box p {
    color: var(--text-main);
    line-height: 1.8;
}

/* Charts */
.charts-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
    margin: 30px 0;
}

.chart-box {
    background: var(--bg-panel);
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.chart-box h3 {
    margin-bottom: 15px;
    color: var(--text-heading);
    font-size: 1.1rem;
}

.chart-box canvas {
    max-height: 300px;
}

/* Statistics */
.stats-details {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 2px solid var(--border-color);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    padding: 12px;
    background: var(--bg-panel);
    border-radius: 4px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.stat-value {
    font-weight: 600;
    color: var(--text-heading);
}

/* Footer */
.footer {
    background: var(--bg-panel);
    padding: 30px 40px;
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
    color: var(--text-secondary);
    flex-shrink: 0;
    margin-top: 24px;
}


.footer p {
    margin-bottom: 10px;
}

.footer strong {
    color: var(--text-main);
}

.footer-links {
    margin-top: 15px;
}

.footer-links a {
    color: var(--primary-color);
    text-decoration: none;
    margin: 0 10px;
}

.footer-links a:hover {
    text-decoration: underline;
}

/* Error Messages */
.error-message {
    background: var(--box-error-bg);
    border-left: 4px solid var(--danger-color);
    color: var(--text-error);
    padding: 15px;
    border-radius: 6px;
    margin: 20px 0;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 10000;
}

.toast {
    min-width: 240px;
    max-width: 360px;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
    animation: toastSlideIn 0.25s ease-out;
}

.toast-success {
    background: var(--success-color);
    color: var(--text-on-accent);
}

.toast-error {
    background: var(--danger-color);
    color: var(--text-on-accent);
}

@keyframes toastSlideIn {
    from {
        transform: translateY(-6px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Responsive: Switch to single column */
@media (max-width: 1024px) {
    .container {
        height: auto;
        min-height: 100vh;
    }

    .main-content {
        overflow: visible;
    }

    .two-column-layout {
        flex-direction: column;
        height: auto;
    }

    .column-left {
        width: 100% !important;
        min-width: 100% !important;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .column-left.collapsed {
        width: 100% !important;
        min-width: 100% !important;
    }

    .column-left-content,
    .column-right-content {
        overflow-y: visible;
        padding: 20px;
    }

    .column-left.collapsed .column-left-content {
        display: none;
    }

    .column-left-content .input-header {
        position: static;
        margin: 0 0 20px;
        padding: 0;
    }

    .column-left.collapsed .collapse-icon {
        transform: rotate(-90deg);
    }

    .collapse-icon {
        transform: rotate(-90deg);
    }

    .column-left:not(.collapsed) .collapse-icon {
        transform: rotate(90deg);
    }

    .column-left-content .input-header,
    .column-right-content .form-actions {
        position: static;
        margin: 0 0 20px;
        padding: 0;
    }
}

@media (max-width: 768px) {
    .header h1 {
        font-size: 1.8rem;
    }
    
    .result-primary {
        grid-template-columns: 1fr;
    }
    
    .charts-container {
        grid-template-columns: 1fr;
    }

    .header {
        padding: 20px;
    }
}

/* Advanced Simulation Options */
.advanced-fieldset {
    border-style: dashed;
}

.legend-toggle {
    background: none;
    border: none;
    font-weight: 600;
    color: var(--text-label);
    font-size: 1.1rem;
    cursor: pointer;
    padding: 0;
    font-family: inherit;
}

.legend-toggle:hover {
    color: var(--primary-color);
}

.advanced-content {
    padding-top: 10px;
}

.info-box {
    background: var(--box-info-bg);
    border-left: 4px solid var(--primary-color);
    padding: 15px 18px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-main);
}

.info-box a {
    color: var(--primary-color);
    text-decoration: underline;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-label);
    font-size: 0.95rem;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
    cursor: pointer;
}

.range-with-value {
    display: flex;
    align-items: center;
    gap: 12px;
}

.range-with-value input[type="range"] {
    flex: 1;
    accent-color: var(--primary-color);
    height: 6px;
}

.range-value {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-heading);
    min-width: 50px;
    text-align: center;
    background: var(--bg-panel);
    padding: 4px 8px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

/* Enhanced MC Comparison Results */
.comparison-banner {
    background: var(--box-info-bg);
    border: 1px solid var(--primary-color);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
}

.comparison-banner h3 {
    color: var(--primary-color);
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.comparison-banner p {
    color: var(--text-main);
    line-height: 1.6;
    font-size: 0.95rem;
}

.enhanced-results-grid {
    border-top: 2px dashed var(--border-color);
    padding-top: 20px;
    margin-top: 10px;
}

.enhanced-results-header {
    grid-column: 1 / -1;
}

.enhanced-results-header h4 {
    color: var(--primary-color);
    font-size: 1.05rem;
    margin-bottom: 5px;
}